Sons of Apollo was an American progressive metal supergroup formed in 2017 and composed of drummer Mike Portnoy, bassist Billy Sheehan, keyboardist Derek Sherinian, vocalist Jeff Scott Soto, and guitarist Ron "Bumblefoot" Thal.

Portnoy, Sheehan, and Sherinian also worked together on a short-lived, live instrumental project with Tony MacAlpine called PSMS.

When Portnoy's schedule allowed, he agreed,[3][4] and suggested Jeff Scott Soto and Ron "Bumblefoot" Thal to complete the line-up, having previously worked with Bumblefoot on Metal Allegiance and knowing Soto after his solo band opened several The Winery Dogs shows in South America.

[8] Their debut album, Psychotic Symphony, was produced by Portnoy and Sherinian (as "The Del Fuvio Brothers") and was released on October 20, 2017, via Inside Out Music/Sony Music.

"[10] In an early 2024 post on his Instagram account, Sherinian referred to MMXX as the band's "second and final album".